Question

Pls help me

In the figure, is an exterior angle to . complete sentence
(a) What is m<3 ?
(b) What is ?
(NOTE: Dont just say : "iTs B iTs A" because it isnt a A or B question)

Answer 1

m∡3 = 103°

m∡4 = 77°

Explanation:

∡3 = 180 - (57 + 20) = 103

∡4 = 180 - ∡3 = 77